CN216913925U - Motor speed control mechanism based on Hall induction and electric hair clipper - Google Patents

Abstract

The utility model provides a motor speed control mechanism based on Hall induction and an electric hair cutter, wherein the motor speed control mechanism comprises a motor and a circuit board, the front end and the rear end of the motor are respectively provided with a front output end and a rear output end, the front output end is suitable for being connected with a movable cutter head, the rear output end is connected with a speed measurement component for detecting the rotating speed of the motor, the speed measurement component comprises a magnetic part and a Hall element which are arranged correspondingly, the magnetic part is connected with the rear output end, and the Hall element and the motor are both electrically connected with the circuit board, so that the circuit board can control the rotating speed of the motor according to the test result of the Hall element. The magnetic part is connected to the rear output end of the motor when the motor works, the Hall element electrically connected with the circuit board is matched, the rotating speed of the motor can be detected, the rotating speed of the head of the electric pushing scissors is accurately controlled according to the actually measured rotating speed, and the speed measuring component is arranged at the rear end of the motor.

Description

Motor speed control mechanism based on Hall induction and electric hair clipper

Technical Field

The utility model relates to the technical field of hair trimmers, in particular to a motor speed control mechanism based on Hall induction and an electric hair clipper.

Background

The electric hair clipper comprises a fixed cutter head, a movable cutter head and a motor, wherein the movable cutter head can reciprocate relative to the fixed cutter head under the driving of the motor so as to realize the hair clipping. Because the rotational speed size of motor can influence the efficiency and the travelling comfort of haircut, easily cause the tool bit high temperature and the noise increase when the rotational speed is too big, it is not enough easily to appear the shearing force when the rotational speed is too big, lead to haircut efficiency to reduce, the condition of dragging the hair still appears easily for a short time in rotational speed, consequently, the rotational speed of controlling the motor through addding fast part of motor accuse among the prior art, but generally install the fast part of motor accuse at the front end of motor, and the motor front end still is connected with the tool bit, the installation space of motor front end is generally less, this installation space that just leads to the motor front end requires highly, it is with great costs to reform transform.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above problems, the present invention firstly provides a motor speed control mechanism based on hall induction, which includes a motor and a circuit board, wherein the front end and the rear end of the motor are respectively provided with a front output end and a rear output end, the front output end is suitable for being connected with a moving tool bit, the rear output end is connected with a speed measurement component for detecting the rotation speed of the motor, the speed measurement component includes a magnetic part and a hall element which are arranged correspondingly to each other, the magnetic part is connected with the rear output end, and both the hall element and the motor are electrically connected with the circuit board, so that the circuit board controls the rotation speed of the motor according to the test result of the hall element.

Alternatively, the hall element is mounted directly to the wiring board.

Optionally, the magnetic member is a multi-pole magnetic ring.

Optionally, the magnetic member includes a turntable and a magnet disposed on the turntable.

Optionally, the number of the magnets is four.

Optionally, the magnetic member further comprises a connecting column vertically connected with the turntable, and the connecting column, the turntable and the rear output end are all coaxially connected.

Optionally, the connecting column is formed by extending forwards from one side of the turntable close to the motor.

Optionally, the front end of the connecting column abuts against an outer surface of the motor.

Optionally, the number of hall elements is two.

Compared with the prior art, the motor speed control mechanism based on the Hall induction has the advantages that the motor is provided with the front output end and the rear output end which rotate coaxially, when the motor works, the magnetic part connected on the rear output end can detect the rotating speed of the motor by matching with the Hall element electrically connected with the circuit board, and the rotating speed of the electric hair cutter head is accurately controlled according to the actually measured rotating speed, when the hair cutter is used for hair cutting, under different loads, the torque force of the motor can dynamically change and follow up, thereby ensuring the stability of the rotating speed, and can accurately control the rotating speed of different gears to stabilize the rotating speed at a specified speed, the speed measuring component is arranged at the rear end of the motor, because the rear end space of the motor is large, the space transformation is easy to realize, the space structure is optimized, the motor is simple and convenient, the requirement on the whole space design is reduced, and the manufacturing cost is low.

In addition, the utility model provides an electric hair clipper, which comprises the motor speed control mechanism based on the Hall induction.

Compared with the prior art, the electric hair clipper has the same advantages as the motor speed control mechanism based on the Hall induction compared with the prior art, and the details are not repeated.

Drawings

FIG. 1 is a partial block diagram of an electric hair clipper in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

description of reference numerals:

1. a motor; 11. a front output end; 12. a rear output end; 2. a circuit board; 3. a speed measuring component; 31. a magnetic member; 311. a turntable; 312. a magnet; 313. connecting columns; 32. a Hall element.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the normal use of a product.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

The embodiment of the utility model provides a motor speed control mechanism based on Hall induction, which is shown by combining a figure 1 and a figure 2 and comprises a motor 1 and a circuit board 2, wherein the front end and the rear end of the motor 1 are respectively provided with a front output end 11 and a rear output end 12, the front output end 11 is suitable for being connected with a movable cutter head, the rear output end 12 is connected with a speed measurement component 3 for detecting the rotating speed of the motor 1, and the speed measurement component 3 and the motor 1 are electrically connected with the circuit board 2 so as to control the rotating speed of the motor 1 by the circuit board 2 according to the test result of the speed measurement component 3.

The speed measuring component 3 comprises a magnetic part 31 and a Hall element 32 which are arranged correspondingly, the magnetic part 31 is connected with the rear output end 12, and the Hall element 32 is electrically connected with the circuit board 2.

The front output end 11 and the rear output end 12 are coaxially arranged, when the motor 1 works, the front output end 11 and the rear output end 12 synchronously rotate, the front output end 11 rotates to drive the movable cutter head to reciprocate relative to the fixed cutter head so as to realize hair cutting operation, and the speed measuring component 3 connected with the rear output end 12 can detect the rotating speed of the rear output end 12 in real time, namely the rotating speed of the motor 1; the rear end of the motor 1 is the end far away from the cutter head; the speed measuring component 3 can detect the rotating speed of the motor 1 in real time and send the test result to the circuit board 2, the circuit board 2 judges whether the rotating speed of the motor 1 is too fast or too slow according to the test result, and determines to reduce the voltage of the motor 1 or increase the voltage of the motor 1 according to the judgment result so as to achieve the purpose of reducing or accelerating the speed of the motor 1, and therefore the motor 1 is enabled to be kept at a stable rotating speed to operate.

When the magnetic member 31 mounted on the rear output end 12 passes through the hall element 32, a pulse signal can be measured on the circuit board 2, the displacement of the rear output end 12 can be sensed according to the pulse signal train, and if the number of pulses emitted in unit time is measured, the speed of the motor 1 can be determined; magnetic part 31 is preferred multipolar magnetic ring or magnetic rotary table, when selecting multipolar magnetic ring for use, a multipolar magnetic ring is adorned to motor 1's back output 12, the hall element 32 of cooperation and circuit board 2 connection forms the subassembly 3 that tests the speed, measure the rotational speed of motor 1, thereby carry out accurate control to the first rotational speed of electric clipper according to measured data signal, when using hair clipper to cut hair and cut hair, under different loads, the dynamic change of the torsion energy of motor 1 follows up, in order to guarantee the stability of motor 1 rotational speed, in addition can also the rotational speed of different gears of accurate control.

In the embodiment of the speed control mechanism of the motor based on the hall induction, the motor 1 is provided with the front output end 11 and the rear output end 12 which rotate coaxially, when the motor 1 works, the magnetic part 31 connected to the rear output end 12 is matched with the hall element 32 electrically connected with the circuit board 2, the rotating speed of the motor 1 can be detected, and the rotating speed of the electric hair clipper head can be accurately controlled according to the actually measured rotating speed, when the hair clipper is used for hair cutting and hair cutting, the torque force of the motor 1 can dynamically change and follow under different loads, so that the stability of the rotating speed can be ensured, the rotating speed of different gears can be accurately controlled, the rotating speed is stabilized at the appointed speed, the speed measurement component 3 is arranged at the rear end of the motor 1, because the rear end space of the motor 1 is larger, the space reconstruction is easier to realize, the space structure is more optimized, the operation is simpler and more convenient, the requirement on the whole space design is reduced, the manufacturing cost is also low.

Alternatively, as shown in fig. 1 and fig. 2, the magnetic member 31 includes a turntable 311 and a magnet 312 disposed on the turntable 311.

The number of the magnets 312 is at least one, the more the number of the magnets 312 is, the higher the detection accuracy of the speed measuring component 3 is, the number of the magnets 312 in this embodiment is preferably four, and the four magnets 312 are uniformly distributed in the circumferential direction of the turntable 311 at intervals, so that the speed measuring component 3 has sufficient accuracy to detect the rotating speed of the motor 1, and the adjacent two magnets 312 are ensured not to influence each other.

Optionally, as shown in fig. 1 and fig. 2, the magnetic member 31 further includes a connection column 313 vertically connected to the turntable 311, and the connection column 313, the turntable 311, and the rear output end 12 are all coaxially connected.

Wherein, spliced pole 313, carousel 311 and back output 12 coaxial coupling can ensure the detection accuracy of subassembly 3 tests the speed.

Optionally, as shown in fig. 1 and fig. 2, the connection column 313 is formed by extending forward from a side of the turntable 311 close to the motor 1.

The connecting column 313 and the turntable 311 are integrally formed, so that the number of assembly parts can be reduced, the structure is simple and reliable, and the assembly efficiency is improved.

Optionally, as shown in fig. 1 and fig. 2, the front end of the connection column (313) abuts against the outer surface of the motor (1), so as to conveniently determine the position of the magnetic member 31 mounted on the rear output end 12, reduce the mounting difficulty, and ensure the detection precision.

Optionally, as shown in fig. 1 and fig. 2, the number of the hall elements 32 is preferably two, which helps to improve the accuracy of the speed measuring assembly 3 in detecting the rotation speed of the motor 1.

Alternatively, as shown in fig. 1 and fig. 2, the hall element 32 is directly mounted on the circuit board 2, so that the overall structure is simplified and integrated, and the cost is lower.

Another embodiment of the present invention provides an electric hair clipper, which comprises the above mentioned motor speed control mechanism based on hall induction.

Electric hair clipper in this embodiment, be equipped with coaxial pivoted preceding output 11 and back output 12 on the motor 1, motor 1 during operation, the rotational speed that motor 1 can be detected out to the speed measuring subassembly 3 of connecting on back output 12, the rotational speed of motor 1 is controlled according to the test result that speed measuring subassembly 3 detected to circuit board 2, make the rotational speed stable at appointed speed, this kind sets up the structure at motor 1 rear end with speed measuring subassembly 3, because motor 1's rear end space itself is great, the space transformation is realized more easily, spatial structure is also more optimized, and is more simple and convenient, requirement to whole space design reduces, and manufacturing cost is also little.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims (10)

1. The utility model provides a motor accuse quick-witted based on hall response, a serial communication port, including motor (1) and circuit board (2), the front and back end of motor (1) has preceding output (11) and back output (12) respectively, preceding output (11) are suitable for and move the tool bit and be connected, back output (12) are connected with and are used for detecting subassembly (3) tests the speed of motor (1) rotational speed, subassembly (3) tests the speed including magnetic part (31) and hall element (32) that correspond the setting each other, magnetic part (31) with back output (12) are connected, hall element (32) with motor (1) all with circuit board (2) electricity is connected, in order to realize circuit board (2) basis hall element (32)'s test result controls the rotational speed of motor (1).

2. The hall induction based motor speed control mechanism according to claim 1, characterized in that the hall element (32) is directly mounted to the circuit board (2).

3. The hall induction based motor speed control mechanism as claimed in claim 1, wherein said magnetic member (31) is a multi-pole magnetic ring.

4. The Hall induction based motor speed control mechanism according to claim 1, wherein said magnetic member (31) comprises a turntable (311) and a magnet (312) disposed on said turntable (311).

5. The Hall induction based motor speed control mechanism according to claim 4, wherein the number of magnets (312) is four.

6. The Hall-induction-based motor speed control mechanism according to claim 4, wherein the magnetic member (31) further comprises a connection column (313) perpendicularly connected to the rotary plate (311), and the connection column (313), the rotary plate (311) and the rear output end (12) are all coaxially connected.

7. The Hall-induction based motor speed control mechanism according to claim 6, wherein said connection post (313) is formed by a forward extension of the side of said rotary plate (311) close to said motor (1).

8. The Hall induction based motor speed control mechanism according to claim 6, wherein the front end of the connection post (313) abuts against the outer surface of the motor (1).

9. Hall-induction based motor speed control mechanism according to any of claims 1-8, characterized in that the number of Hall-elements (32) is two.

10. An electric hair clipper, characterized in that it comprises a hall induction based motor speed control mechanism according to any one of claims 1 to 9.

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